{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:01:31Z","timestamp":1760230891074,"version":"build-2065373602"},"reference-count":21,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2022,8,19]],"date-time":"2022-08-19T00:00:00Z","timestamp":1660867200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Hainan Provincial Natural Science Foundation of China","award":["120QN275","2019RC258","2020361","KJL-2021-001"],"award-info":[{"award-number":["120QN275","2019RC258","2020361","KJL-2021-001"]}]},{"name":"Youth Innovation Promotion Association CAS","award":["120QN275","2019RC258","2020361","KJL-2021-001"],"award-info":[{"award-number":["120QN275","2019RC258","2020361","KJL-2021-001"]}]},{"name":"project of the Key Laboratory of Space Laser Information Transmission and Detection Technology of the Chinese Academy of Sciences","award":["120QN275","2019RC258","2020361","KJL-2021-001"],"award-info":[{"award-number":["120QN275","2019RC258","2020361","KJL-2021-001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Due to advantages such as the high efficiency of light utilization, small volume, and vibration resistance, digital micro-mirror device (DMD)-based spectrometers are widely used in ocean investigations, mountain surveys, and other field science research. In order to eliminate the stray light caused by DMDs, the stray light in DMD-based spectrometers was first measured and analyzed. Then, the stray light was classified into wavelength-related components and wavelength-unrelated components. Moreover, the noise caused by the stray light was analyzed from the perspective of encoding equation, and the de-noising decoding equation was deduced. The results showed that the accuracy range of absorbance was enhanced from [0, 1.9] to [0, 3.1] in single-stripe mode and the accuracy range of absorbance was enhanced from [0, 3.8] to [0, 6.3] in Hadamard transform (HT) multiple-stripe mode. A conclusion can be drawn that the de-noising strategy is feasible and effective for enhancing the SNR in DMD-based spectrometers.<\/jats:p>","DOI":"10.3390\/s22166237","type":"journal-article","created":{"date-parts":[[2022,8,22]],"date-time":"2022-08-22T01:56:40Z","timestamp":1661133400000},"page":"6237","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Analysis of Stray Light and Enhancement of SNR in DMD-Based Spectrometers"],"prefix":"10.3390","volume":"22","author":[{"given":"Xiangzi","family":"Chen","sequence":"first","affiliation":[{"name":"College of Marine Science and Technology, Hainan Tropical Ocean University, Sanya 572022, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiangqian","family":"Quan","sequence":"additional","affiliation":[{"name":"Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"13669","DOI":"10.1364\/OE.420552","article-title":"Micro two-dimensional slit-array for super resolution beyond pixel Nyquist limits in grating spectrometer","volume":"29","author":"Chi","year":"2021","journal-title":"Opt. 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